By State police do you mean State Troopers, cause every state has those. The one s who have the who have most control are forest Rangers, they can search your car and home without search warrant.
Yes,a state police can investigate a state case.
Maryland State Police was created in 1921.
to be a police officer you need to attend a state approved police academy and be state certified in the state you live in.
I believe that the Texas Rangers were the first "state police".
In a police state, the government would control the actions of police.
The highest police officer in a state is typically the state police superintendent or commissioner, depending on the state's structure. This official oversees the state police or highway patrol and is responsible for law enforcement at the state level. In some states, this position may be appointed by the governor or designated by a state agency.
It was the Pennsylvania State Police.
Indiana State Police was created in 1933.
California State Police was created in 1887.
Connecticut State Police was created in 1903.
Virginia State Police was created in 1932.
Louisiana State Police was created in 1922.